description this alcatel 1916 lmm contains an alcatel dfb laser with monolithically integrated electro-absorption modulator (ilm). this chip provides much lower dispersion penalties than a directly modulated dfb, without the complexity of linbo3 external modulators. the alcatel 1916 lmm is optimized for ultra long-haul transmission systems using non-dispersion shifted and optical fiber amplifiers. features ? industry-standard 14-pin butterfly package ? very low dispersion penalty over 750km for 2.5 gbit/s operation ? ingaasp monolithically integrated dfb laser and modulator chip ? high frequency butterfly package with 50 ? rf impedance matching and dc bias rf filtering ? low drive voltage ( 2 vpp) ? internal optical isolator ? high power available applications ? stm-16 and oc-48 ultra long-haul transmission systems ? terminals for submarine transmission systems optical characteristics parameter symb. conditions min typical max units threshold current i th cw, v bias = 0 v 5 17 35 ma operating current iop cw, v bias = 0 v 50 80 100 ma optical output power p ave i op , v mod , [1] 0 dbm laser forward voltage v f cw, i op , v bias = 0 v 2 v modulator bias voltage v bias see [1] - 2 - 1 0 v modulator drive voltage v mod see [1] 1 2 v dynamic extinction ratio der see [1] 10 db emission wavelength m 1530 1570 nm side mode suppression smsr @ i op 35 db cut off frequency s21 - 3 db 4 ghz rf return loss s11 dc to 3 ghz 10 11 db dispersion penalty ? s see [1], [2] 2 db tracking error tr tsubmount = 25 c, tcase = 70c if = 100 ma, q = 10 log [p(70 c)/p(25 c)] - 0.5 0.5 db rise time / fall time tr/tf [1], 10%, 90% 70 125 ps optical return loss ol tc = - 5 to 70 c 25 db monitor diode current i m i op, vm = - 5 v 0.2 0.5 1.5 ma dark current i d 0.1 a tec current i t ? t= 45 c, i o p = 120 ma, t c = 70 c, v bias = - 1 v 1 1.2 a tec voltage v t ? t= 45 c, i op = 120 ma, t c = 70 c, v bias = - 1 v 1.6 2.4 v thermistor resistance r th 9.5 10.5 k ? notes : all limits start of life, tcase = 25 c, tsubmount = 25 c, monitor bias = - 5 v, unless otherwise stated. [1] ber = 10 -10 ; 2.488 gbit/s modulation; 2 23 -1 prbs; nzr line code; der 10db [2] 7200 ps/nm dispersion, assuming fiber with an average dispersion of 18 ps/nm/km absolute maximum ratings parameters min max unit operating case temperature - 5 70 c storage temperature -40 85 c laser forward current 150 ma laser reverse voltage 2v modulator forward voltage 1v modulator reverse voltage 5v photodiode forward current 1 ma photodiode reverse voltage 20 v tec voltage 2.8 v tec current 1.4 a esd applied on modulator 500 v esd applied on laser [1] 2000 v lead soldering time (at 260c) 10 s packing mounting screw torque 0.2 nm [1] human body model stresses in excess of the absolute maximum ratings can cause permanent damage to the device. these are abs olute stress ratings only. a lcatel 1916 lmm 2.5 gbit/s digital laser module with integrated electro-absorption modulator
mechanical details pin out n description 1thermistor 2thermistor 3 laser dc bias (+) 4 photodetector anode (-) 5 photodetector cathode (+) 6tec (+) 7tec (-) 8 case ground 9 case ground 10 not connected 11 laser / modulator ground 12 modulator anode/50 ? rf input 13 laser / modulator ground 14 not connected ordering information alcatel 1916 lmm application part number connector 12800 ps/nm 3cn00397aa fc/pc 7200 ps/nm 3CN00149AA fc/pc 4000 ps/nm 3cn00307aa fc/pc standards itu-t g.691 iec 68-2 and mil std 883 environment laser radiation avoid exposure to beam class 3 b laser product attention observe precautions for handling electrostatic discharge sensitive devices september 00 copyright ? 2000 alcatel optronics customized versions are available for large quantities. performance figures contained in this document must be specifically confirmed in writing by alcatel optronics before they become applicable to any particular order or contract. alcatel optronics reserves the right to make changes to the products or information contained herein without notice. europe route de villejust f-91625 nozay cedex tel : (+33) 1 64 49 49 10 fax : (+33) 1 64 49 49 61 usa 12030 sunrise valley drive reston - va 2 2091 tel : (+1) 703 715 3921 fax : (+1) 703 860 1183 canada 45, de villebois, suite 200 gatineau (pq) canada, j8t 8j7 tel : (+1) 819 243 3755 fax : (+1) 819 243 3354 japan yebisu garden place tower po box 5024 20-3, ebisu 4 - chome shibuya - ku tokyo 150 - 6028 tel : (+81) 3 5424 85 65 fax : (+81) 3 5424 85 81
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